Entry 3 senses · 2 variants Webster, 1913 Inset /ĭn'-sĕtˌ/ · In·set · IPA /ˈɪnsɛt/ v. t. n. 01 v. t. To infix. 1. To infix.[Obs.] 02 n. That which is inserted or set in; an insertion. 1. That which is inserted or set in; an insertion. 2. One or more separate leaves inserted in a volume before binding;(Bookbinding)